For those late to the party, the questions regarding the "visual display complex" harken back to a work permit Disney filed for the "installing merchandising trailers at visual display complex" from January 26 (originally posted
here) and on Feb 2 for demolition and abatement for a visual display complex (originally posted
here). This
post adds the detail that there would be 18 modular trailers, and that the permits were filed at the same time as the expansion of 600 was filed -- suggesting that the projects were related.
There are lots of other posts with speculation as to what these disparate bits add up to, but those are the factual elements from which we might springboard.